MESON Chess Problem Database

Problem Display
PID: 12320 (6B1/8/2K2p2/pR4p1/4k1p1/4n3/4Q2B/bb3R1N w - - 0 1)

Myllyniemi, Matti Arvo

1st Prize, Suomen Shakki, 1977

6B1/8/2K2p2/pR4p1/4k1p1/4n3/4Q2B/bb3R1N

#2

7 + 8

3750 FIDE Album (1977-1979) 1984
56 The Problemist 2008

SOLUTION

  • SOUND
  • Sets
    • 1...Bd4
      • 2.Sf2#
      • 2.Sg3#
      • 2.Bd5#
  • Tries
    • 1.Re1?
      • threat
        • 2.Qxe3#
      • 1...Kd4
        • 2.Qxe3#
      • 1...Bd4
        • 2.Sf2#
      • 1...Be5!
    • 1.Rf3?
      • threat
        • 2.Qxe3#
      • 1...Kd4
        • 2.Qxe3#
      • 1...Bd4
        • 2.Sf2#
        • 2.Sg3#
        • 2.Bd5#
      • 1...gxf3!
    • 1.Rb3?
      • threat
        • 2.Qxe3#
      • 1...Kd4
        • 2.Qxe3#
      • 1...Bd4
        • 2.Bd5#
      • 1...Bd3
        • 2.Qxd3#
      • 1...Bc3!
    • 1.Rb4+?
      • 1...Bd4
        • 2.Bd5#
      • 1...axb4!
    • 1.Rd5?
      • threat
        • 2.Sf2#
        • 2.Sg3#
      • 1...g3
        • 2.Sxg3#
        • 2.Qf3#
      • 1...Be5!
    • 1.Qc4+?
      • 1...Bd4
        • 2.Sg3#
      • 1...Sxc4!
  • Keys
    • 1.Bg1!
      • threat
        • 2.Qxe3#
      • 1...Kd4
        • 2.Qc4#
        • 2.Qxe3#
      • 1...Bd4
        • 2.Sg3#

This is after

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(A);
      • Threat
        • QAR1(C),XS(c)
      • Vars
        • K(d);N_SPINS(c),P-FLIGHT::QAB1(C),XS(c)
        • B(a);SBLOCK::S(B)
      • Refutation
        • B(a);
    • Try
      • R(A);
      • Threat
        • QAR1(C),XS(c)
      • Vars
        • K(d);N_SPINS(c),P-FLIGHT::QAB1(C),XS(c)
      • Refutation
        • P(e);XR(A)
    • Try
      • R(E);
      • Threat
        • QAR1(C),XS(c)
      • Vars
        • K(d);N_SPINS(c),P-FLIGHT::QAB1(C),XS(c)
        • B(a);SBLOCK::B(G)
        • B(b);N_GUARD::QAB1(C),XB(b)
      • Refutation
        • B(a);
    • Try
      • R(E);CHECK
      • Vars
        • B(a);P_SPINB(a)::B(G)
      • Refutation
        • P(f);XR(E)
    • Try
      • R(E);
      • Threat
        • DUALS(2)
      • Refutation
        • B(a);
    • Try
      • Q(C);CHECK,N_PINS(c)
      • Vars
        • B(a);P_SPINB(a)::S(B)
      • Refutation
        • S(c);XQ(C)
  • Actual
    • B(D);
    • Threat
      • QAR1(C),XS(c)
    • Vars
      • B(a);SBLOCK::S(B)
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